| 摘要 |
<p>A blade assembly for a power harrow has support means (8) formed with two recesses, each for accommodating a respective flange (15) of a respective harrow blade (16). The support means carries two retaining members (10) each of which is moveable between an operative position and an inoperative position, and is biased towards the operative position. When the retaining member is in its operative position, it locks the corresponding blade in position in the corresponding recess, whilst moving the retaining member into an inoperative position allows the insertion of a flange into the recess or the withdrawal of the flange from the recess. A power harrow may be provided with a plurality of such blade assemblies.</p> |
